Plutarch, Conjugalia Praecepta
Goodwin, Ed.

As there is little or no use to be made of a mirror, though in a frame of gold enchased with all the sparkling variety of the richest gems, unless it render back the true similitude of the image it receives; so is there nothing of profit in a wealthy dowry, unless the conditions, the temper, the humor of the wife be conformable to the natural disposition and inclination of the husband, and he sees the virtues of his own mind exactly represented in hers. Or, if a fair and beautiful mirror that makes a sad and pensive visage look jocund and gay, or a wanton or smiling countenance show pensive and mournful, is therefore presently rejected as of no value; thus may not she be thought an angry, peevish, and importunate woman, that [p. 491] louts and lowers upon the caresses of a husband, and when he courts the pastime of her affections, entertains him with frumps and taunts, but when she finds him serious in business, allures him then with her unseasonable toyings to pleasure and enjoyment? For the one is an offence of impertinency, the other a contempt of her husband's kindness. But, as geometricians affirm that lines and surfaces are not moved of themselves, but according to the motions of the bodies to which they belong, so it behooves a woman to challenge no peculiar passion or affection as her own, but to share with her husband in business, in his recreations, in his cares, and in his mirth.